Very sad please help

I’m 19 years old and 4 weeks pregnant, my mom and sister refuse to talk to me. I’m in med school for nursing it ends in august a month before my due date. My mom and sister keep trying to convince me to get an abortion. I don’t want an abortion. Me and the baby’s father are excited and happy about this pregnancy. Everyone else isn’t and we don’t get the support we wish we did. My mom and family make me feel like a disappointment. We told them we got pregnant on purpose because we wanted to be parents and they were insulting us for being so young and not knowing what we’re going to “do with our lives.” This is something we wanted. And it hurts that we don’t have any support from family. Any advice? I don’t want to abort the baby.